655504 has 20 divisors (see below), whose sum is σ = 1295676. Its totient is φ = 321152.

The previous prime is 655489. The next prime is 655507. The reversal of 655504 is 405556.

It can be written as a sum of positive squares in 2 ways, for example, as 230400 + 425104 = 480^2 + 652^2 .

It is not an unprimeable number, because it can be changed into a prime (655507) by changing a digit.

655504 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462 + ... + 1234.

2⁶⁵⁵⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

655504 is a deficient number, since it is larger than the sum of its proper divisors (640172).

655504 is a wasteful number, since it uses less digits than its factorization.

655504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 655504 is about 809.6320151773. The cubic root of 655504 is about 86.8677251814.

The spelling of 655504 in words is "six hundred fifty-five thousand, five hundred four".